Loose Diamonds Search

Judging Diamond Quality

Engagement Rings
View our diamonds here.

What to Look For

If you want to begin judging diamond quality, you must first learn and understand the 4 C’s, which are four characteristics of diamonds that give the gem stone it’s overall value. The 4 C’s for judging diamond quality include the diamond's color, clarity, carats and cut.

Judging Color

Most diamonds are considered to be ideal if they are transparent or colorless. Diamonds that are rated as colorless are the most expensive of diamonds. Diamond colors are rated with an alphabet grading system that starts with “D” and ends with “Z.” Completely colorless diamonds fall in the “D” and “E” grade while colored, fancy diamonds are at the other end of the alphabet, at “Y” and “Z.”

There are two main ways that jewelers use to judge diamond quality based on color. They may pull out a set of reference stones and find the closest match between the diamond and the reference stone to determine its letter grade. Alternatively, the jeweler may use a colorimeter, which can electronically measure the color of the stone and determine its grade within 1/3 of a grade.


Solitaire Rings

Solitaire Rings

Rings With Sidestones

Rings With Sidestones

Matching Bridal Sets

Matching Bridal Sets

Sareen Engagement Rings

Sareen Engagement Rings

Tension Rings

Tension Rings

Three Stone Rings

Three Stone Rings

Tulip Collection

Tulip Collection

Tulip Matching Bridal Sets

Tulip Matching Bridal Sets

Judging Clarity

Diamond clarity refers to whether or not the diamond is clear all the way through, or whether it has tiny flaws and cloudy areas within the gemstone. It’s actually very rare to have a diamond with absolute perfect clarity and no flaws but most diamond flaws are not visible to the naked eye and can only be seen with a magnifying device.

The Gemological Institute of America (GIA) uses a magnification of about 10x when judging diamond quality based on the clarity. There are treatments available to make a diamond appear nicer than it actually is and the treatments should lower the overall price of the diamond so it is important to do your research before purchasing a diamond to be sure you are not spending more money than you should.

Judging Carat Weight

Diamond carat is the term we used to describe the weight of a diamond gemstone. One carat is equivalent to 200 milligrams of weight. A single diamond with a high amount of carat weight is more expensive than the equivalent amount of carats in multiple stones. This is because finding the larger diamonds is much more rare of an occurrence. So, if you want a 2-carat diamond ring, for example, you may decide to go with a half-carat diamond surrounded by smaller diamonds that add up to one and a half carats to give you the total of 2 carats. Judging diamond quality by the amount of carats is difficult since different shaped gemstones and stones with different levels of clarity will be priced differently even if they have the same amount of carats.

Judging Cut

One of the most important factors in judging diamond quality is judging the cut of a diamond. It’s important because a quality diamond cut will be more brilliant and reflects light more beautifully, and yet the cut of a diamond has the least impact on the overall price of the diamond.

When judging diamond quality on the cut of a diamond, look at the stone in a well lit area. If the light seems to go into the stone and bounce back, showing a sparkling reflective surface, the diamond has a good cut. The angles and shapes of a diamond are important to judging diamond quality and the overall appearance of your diamond.

Related Articles



diamonds Best diamond prices online
loose diamonds Free FedEx shipping to the USA
engagement rings No risk 30 day money back guarantee
diamond rings All engagement rings are made in the USA
wedding rings Registered with the Better Business Bureau
certified diamonds Huge selection of high quality diamonds
  More Reasons >>

I just wanted to let you know that I received my ring last week. There were delays over the weekend in customs. The ring is very nice. I just had it appraised...
Scott

View More


I just wanted to let you know I received the engagement ring I purchased. It's exactly what I wanted. Simple and elegant, thanks so much I'm sure my girlfriend will love it....
Adam

View More


I just wanted to let you know that the shipment arrived yesterday without any issues. Thank you so very much for all the help, and the excellent service. I continue to be impressed...
Robert

View More


Just a quick Thank You. The ring is perfect and the service was even better! Delivered, as promised and on time. I wish all of my purchasing experiences were as good. Thanks....
Terry

View More


Just wanted to let you know that my fiance loves the engagement ring. I also had it appraised, and the jeweler said it was a beautiful stone. He was also very impressed with the quality...
Alex

View More


We wanted to thank you for the spectacular and stunning job on our wedding bands, as well as my engagement ring! The quality of the diamonds Novori offers are truly magnificent! The way that the...
Michael & Barbara

View More


Hello, I just wanted to write ya'll to say thank you very much for a smooth and professional transaction. The ring is absolutely stunning. Jen...my fiancée(she said yes) loves it! She also wants to buy...
Tyler

View More


I wanted to take the time to drop you a note to express how delighted I am with the entire experience for purchasing the rings from Novori. From the outset, starting with the exceptional design of...
Darren

View More


Thank-you for adding the engraving to the order. I am most pleased with your aid, understanding and patience. I do not anticipate corresponding with you again, so therefore I will sign off with...
G

View More


I just wanted to say Thank You for your help with the engagement ring. I got it last week, and Veesha (my fiancé) loved it. I owe you big time! You were...
Vishal

View More


I gave it too her last night and she said yes. She loved the ring. The diamond is nothing less then perfect. It appraised over 3 times the purchase cost. Thanks...
David

View More


The ring has arrived safely and it looks fantastic. I’ve seen nothing like it in the UK which makes it all the more special. Thank you very much for all your assistance over the last...
Gavin

View More


I got my ring this morning and all I can say is wow! Thank you for all your time and patience working for me. Have a great day....
Robert

View More


The engagement ring ordered by Robert has arrived in Kuwait and found it's permanent home on my finger. I wanted to say thank you for the beautiful work. This ring is gorgeous!...
Tammy

View More


I have received the appraisal. I truly appreciate your help and quick response. Novori is definitely a great company and I am going to recommend your company to all of my friends and family....
Ricardo

View More



Diamond Jewelry Member
Novori BBB


Diamond Rings Payment Options

Credit Card Processing

 
  |    Home  |   Contact Us  |   Payment Policy  |   Return Policy  |   Privacy Policy |   Engagement Rings News  |   Diamonds  |   SiteMap  |  
   
  © 2004-2014 Novori Jewelry Inc. All rights reserved.     Terms and Conditions